The Frame Bar and Quick Flex Bar are the most popular accessories to attach to your Tumbl Trak. But, how do you decide which one is best for your gym? The Frame Bar can be attached to any of the Tumbl Trak brand Tumbl Traks, while the Quick Flex Bar can not be attached to the In-ground Tumbl Trak or Porta Trak. Watch our product videos and read further descriptions below for more details on each of these essential Tumbl Trak accessories.